Romera Rabasa, Miguel ÁlvaroGrollier, JulieCollin, SophieDevolder, ThibautCros, VincentMuñoz, ManuelPrieto, José Luis2024-01-252024-01-252013Miguel Romera, Julie Grollier, Sophie Collin, Thibaut Devolder, Vincent Cros, Manuel Munoz, and Jose L. Prieto , Appl. Phys. Lett. 103, 122404 (2013)0003-695110.1063/1.4821510https://hdl.handle.net/20.500.14352/95478A sharp antiferromagnetic boundary of Fe/Gd is found to affect notoriously the critical current for spin transfer torque (STT). Transport measurements performed on nano-patterned spin valves show that when a Fe/Gd/Fe is added as a top layer, the effect of spin transfer on the free layer is dramatically reduced. The critical current increases up to one order of magnitude at 10 K and five times at room temperature. We show that this increase cannot be fully explained by the macrospin approximation and we argue that it is due to a torque at the Gd/Fe interface that opposes the STT in the free layer.engjournal article1077-3118https://doi.org/10.1063/1.4821510restricted access538.9Física del estado sólido2211.17 Propiedades Magnéticas